Krüger, Michael, M. Schenk, and Peter Hommelhoff. "Strong-field effects and attosecond control of electrons in photoemission from a nanoscale metal tip." Proceedings of the 12th International Conference on Multiphoton Processes, ICOMP 2011 and the 3rd International Conference on Attosecond Physics, ATTO 2011, Sapporo, Hokkaido Springer Science and Business Media, LLC, 2012. 401-406.